Self-sizing network—algorithmic aspects
Shigeo Shioda · International Journal of Communication Systems · 1998
This paper presents a bandwidth adjustment mechanism for a self-sizing network, which has been proposed as an operation concept for ATM networks and is based on the autonomous adjustment of virtual path (VP) bandwidth. Several simple algorithms for estimating the bandwidth demand—the minimum bandwidth needed to satisfy the quality-of-service (QoS) objectives—are proposed for the case where QoS-guaranteed virtual channels (VCs) and best-effort VCs are multiplexed in separate VPs. The proposed algorithms use only a few assumptions about traffic characteristics, making them applicable to a wide range of traffic types. In addition, errors in VP bandwidth estimation are corrected by adaptively adjusting the VP bandwidth using real-time traffic measurement. Numerical examples confirm that the proposed algorithms can quickly restore the QoSs of VPs from any initial conditions and keep them at an appropriate level. © 1998 John Wiley & Sons, Ltd.